72 results about "Memory code" patented technology

A method of system for hardening a firmware environment. A trusted core framework of firmware components are segregated from initially non-trustworthy extended firmware components such that the trusted core components are executed in a privileged processor mode, while the extended firmware components are executed in a non-privileged processor mode. An authentication of each extended firmware component is made to determine whether it is secure or non-secure. Through a memory code fault mechanism, memory accesses made by the extended firmware components are trapped, and a determination is made to whether the memory accesses should be allowed based on whether the extended firmware component is secure or non-secure and whether the requested memory page was allocated by the trusted core or a secure extended firmware component. This segregation scheme prevents non-trusted firmware from accessing privileged memory, thereby preventing rogue, errant, or malicious firmware from damaging the trusted core framework.

A radio-frequency surgical implement detection system detects surgical implements in a surgical wound during and at the completion of a surgical procedure. Surgical implements, including surgical sponges or laparotomy pads, gauze pads and metallic surgical instruments, are individually attached to a non battery-powered, encapsulated radio-frequency marker. The marker comprises an integrated chip having a burnt-in memory code, which is broadcast through an antenna using a modulated carrier frequency. The code is received by an interrogating antenna of a detector. The interrogating antenna provides a power pulse, which is received by the antenna of the radio-frequency marker. The power pulse charges a capacitor, which proves power for the read function, carrier frequency modulation function and broadcast function of the integrated chip, permitting each marker-containing implement to be specifically identified.

The invention provides a network camera identity authentication method based on a TPCM. The method is characterized in that a network camera and a reliable gateway adopt a self-signing mode to generate a digital certificate which comprises a value of a platform configuration register and a measurement result of a memory code segment in operation. An authentication center verifies validity of the digital certificate and confirms identity of the verified party. Advantages are that a measurement value in the starting process of equipment is stored in the platform configuration register so that hardware of the network camera and the reliable gateway is ensured to be unchanged. Reliability of equipment identity is ensured from the aspect of software via measurement of the memory code segment. Besides, a signature secret key is generated by a TPCM chip and bound with the hardware platform state of the equipment so that the digital certificate is difficult to forge.

The apparatus involves a hand-held housing with a memory for storing coded audio event data, a mechanism for downloading into the memory coded audio event data and digital-audio electronics for retrieving coded audio event data from memory, converting it to an audio signal and playing it out. In one disclosed embodiment of the invention, the data are stored in accordance with a musical instrument digital interface (MIDI) standard, and may be created on an appropriately equipped personal computer (PC). The capacity of such a hand-held device is far greater than if the data were conventionally digitized or coded. A wirelessly networked system of such music devices in physical proximity is disclosed that enables audio score synthesis and mixing by at least one such device of a synthesized score and an inputted score for outplay to others in a real-time musical jam or music-sharing session.

The invention provides a multiple fake-proof print oil with memory code and its checking method, wherein the fake-proof print oil comprises stamp-pad ink, magnetic memory material and encrypted message therein, infrared fluorescent material and ultraviolet fluorescent material.

The invention discloses a video snapshot method based on a memory coding mechanism and a video snapshot device thereof. The method comprises the following steps that multiple frames of video images are continuously acquired according to a set snapshot period, and the timestamp of the snapshot moment is marked on the video images, wherein the video images include target characteristics; the target characteristics of the acquired multiple frames of video images are intelligently analyzed so as to select the metadata of the image frames having the optimal detection effect and the corresponding timestamp in a screening way; the acquired multiple frames of video images are coded, and the corresponding video images are searched from the coded video images according to the received timestamp to act as the optimal snapshot images; and the optimal snapshot images and the corresponding metadata are uploaded. According to the technical scheme, ineffective snapshot can be avoided, the images having the optimal snapshot effect can be acquired, the snapshot accuracy can be enhanced and the network bandwidth resource can also be saved.

The method includes steps: first, building code table; then, information conversion; finally, carrying out comparison sort. Being converted to corresponding number, memory code of name (Unicode) of each user is arranged on phone book according to big and small. Keyboard of number converted from memory code of name (Unicode) is the keyboard the Unicode located at. Method for looking-up phone book of hand held device includes steps: first inputting number key; second, calling and obtaining user; third displaying user, finally, selecting user. Features are: convenience for looking up phone book, and quick.

The invention discloses a detection device and method for quickly positioning a failure memory bank, and relates to a memory detection technology. The detection device mainly comprises a server mainboard and an external nixie tube small board; the server mainboard is provided with CPUs, a BIOS chip, a self-detection nixie tube interface and multiple memory banks expanded by the CPUs, and the nixie tube small board is connected to the self-detection nixie tube interface through a patch cord. According to the detection device and method for quickly positioning the failure memory bank, a memory failure code table is built, and when memory failure detection is performed, failure memory codes are displayed through the nixie tube small board and compared with the memory failure code table to quickly position the position of the failure memory bank; the time of server operators for excluding the failure memory bank can be saved, the workloads of the operators are reduced, the debugging efficiency of a server production line is improved, and the server productivity is improved.

In order to solve the potential security hazard problem existing in RFID, the invention provides a security system applied to an electronic tag. The security system comprises an RFID chip, a reader and an unsymmetrical cryptographic algorithm, wherein the RFID chip is provided with tag memory codes of a Faraday cup and a memory switching key; the reader is provided with a detector; and the unsymmetrical cryptographic algorithm with the following improvement is arranged between the RFID chip and the reader. The algorithm comprises the steps of initially permuting, inversely permuting, transmitting a Query authentication request to the electronic tag by the electronic tag reader, generating H(IDkIIR), putting forward a request for obtaining all electronic tag marks to a backend database by the electronic tag reader, automatically marking the electronic tag reader by the backend database, authenticating the electronic tag reader, verifying the electronic tag, and the like.

A receiver is provided for use with a satellite navigation system comprising a constellation of multiple satellites. Each satellite transmits a signal incorporating a spreading code. The receiver includes at least one code storage unit that includes combinatorial logic for storing a memory code comprising a fixed pattern of bits including address decoding, wherein the stored memory code corresponds to a spreading code incorporated into a signal transmitted from a satellite. The receiver further includes a correlator for performing a correlation between an incoming signal and the stored spreading code from the one code storage unit.

The invention relates to the technical field of electronic communication, in particular to an SRAM memory cell and a circuit for improving the read/write stability of the SRAM memory cell. The SRAM memory cell comprises a first switch device, a second switch device, a first inverse unit and a second inverse unit, wherein the first switch device is controllably connected with a first bit line to a first memory code; the second switch device is controllably connected with a second bit line to a second memory code; the first inverse unit is connected between the first switch device and the second switch device in series; the first inverse unit is provided with a first input end and a first output end; the first memory code is defined at the first output end; the second inverse unit is connected between the first switch device and the second switch device in series; a second input end of the second inverse unit is connected with the first output end; a second output end of the second inverse unit is connected with the first input end; and the second memory code is defined at the second output end. According to the SRAM memory cell and the circuit, better read/write ability is provided, the reliability of the SRAM memory cell is improved without adding overmuch extra circuits, the complexity of circuit design is reduced and the area is saved.

The integrity verification system includes a client and an RCE server. The client requests an RCE service to the RCE server using a pointer of a return function as a parameter of a service call function and transmits a memory code of the return function to the RCE server when Reverse-RCE for obtaining the memory code of the return function is requested from the RCE server. The RCE server generates a first hash key of the transmitted memory code, compares the first hash key to a stored second hash key of the memory code of an original return function, generates a return value according to a compared result between the first hash key and the second hash key and transmits the generated return value to the client using the generated return value as a parameter of the service call function. The client executes the return function using the return value as a parameter of the return function.